const mongoose = require('mongoose')

mongoose.connect('mongodb://127.0.0.1:27017/bilibili')

mongoose.connection.once('open', () => {
  console.log('连接成功')
})
mongoose.connection.on('error', () => {
  console.log('连接失败')
})
mongoose.connection.on('close', () => {
  console.log('连接关闭')
})

